From a747e404271fec1a02b7a041f916d5b7b55cc47c Mon Sep 17 00:00:00 2001 From: Wookey Date: Fri, 28 Jun 2024 02:49:06 +0100 Subject: [PATCH] Add CO2 factors for ferries and rewrite section. --- handbook/emissions.html | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/handbook/emissions.html b/handbook/emissions.html index 19b627d27..a0f2898ec 100644 --- a/handbook/emissions.html +++ b/handbook/emissions.html @@ -28,7 +28,7 @@
  • Who was in their car for the outward and return journey
  • Fuel usage (in litres) for the outward and return journey (could easily be calculated by drivers by keeping their fuel receipts)
  • Whether their car is petrol or diesel
    • -
  • Channel crossing route/method
    • +
  • Channel crossing route/method, preferably ship name/type

    • Per person and per journey CO2 (kg) =

    @@ -86,19 +86,34 @@
  • Input journey into: https://scif.org.uk/web/carbon-calculator/, selecting 'bus' as travel mode
    • -

    Ferry calculations (not from UK)

    +

    Ferry calculations

    + +

    Mostly people will be doing the UK/France crossing, but some attendees will use ferries elsewhere - e.g from/to Scandinavia or Greek Islands. Good emissions data for ferries is still hard to find, but improving. Emissions vary enormously by ferry type and propulsion system. The main thing is to distinguish the basic type: Chunnel (nuclear-electric rail and thus very low-carbon), standard (displacaement) car ferries, and fast/catamaran/planing type ferries (often passenger only) which use much more fuel. Knowing the name of the ferry or propulsion type would be very helpful.

    +

    Data needed:

    Methodology:

      -
    1. Input journey into: https://scif.org.uk/web/carbon-calculator' using 'plane' for fast ferries as travel mode and 'bus' for slow car-ferries (Temporary hack, but better than ignoring ferries completely)
      2. +
    2. Crossing distance one way (km) * ferry CO2e factor (kg per passenger-km) * Number of people in car (gives one-way value)
      3. +
    -Currently the calculator does not complain if you travel 'by bus' between two islands. + +

    References: https://thrustcarbon.com/insights/how-to-calculate-emissions-from-a-ferry-journey, https://www.ferryhopper.com/en/blog/featured/eco-sustainable-ferry-travel, https://www.getlinkgroup.com/en/our-group/eurotunnel/ +

    Gear calulations

    These have not been done so far, and are hard to calculate as most manufacturers do not yet provied LCAs for their stuff, and we don't track purchase weights, but an estimate could be made from the gear/shopping lists and existing materials sources given sufficient enthusiasm.